Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction – 2021 Buick Cadillac Chevrolet GMC

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June 3, 2021 NHTSA CAMPAIGN NUMBER: 21V421000

Air Bag Light May Not Indicate Malfunction

The air bag malfunction indicator light may fail to warn the driver of a problem with the air bag, increasing the risk of injury.

 

NHTSA Campaign Number: 21V421

Manufacturer General Motors, LLC

Components ELECTRICAL SYSTEM, AIR BAGS

Potential Number of Units Affected 285,622

 

Summary

General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Escalade, Escalade ESV, Chevrolet Tahoe, Corvette, Suburban, GMC Yukon, Yukon XL vehicles. The communications gateway module incorrectly processes a loss of communication with the sensing diagnostic module (SDM), causing the air bag malfunction indicator light to inconsistently illuminate.

 

Remedy

Dealers will update the software in the communications gateway module, free of charge. Owner notification letters were mailed on July 1, 2021. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM’s number for this recall is N212338110.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

 

Check if your Vehicle has a Recall

 


Condition

General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2021 model year Buick Envision vehicles; Cadillac CT4, CT5, Escalade, and Escalade ESV vehicles; Chevrolet Corvette, Suburban, and Tahoe vehicles; and GMC Yukon and Yukon XL vehicles. A software problem exists in certain of these vehicles which would cause a sensing diagnostic module (SDM) communications fault to illuminate the airbag malfunction indicator lamp, but only on alternating ignition cycles. As a result, an SDM communications fault would not consistently illuminate the airbag light on every ignition cycle to indicate a problem to the driver. A driver might not be warned of an SDM loss of communication fault which might indicate a problem with airbag deployment. If airbags do not deploy appropriately in a crash, there is an increased risk of injury in that crash.

 

Correction

GM will update the software in the vehicles’ serial data gateway module. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may schedule to have the updates performed at a GM dealer.

 

Parts

No parts are required for this repair.

 


GM Recall N212338110 

Driver Information Center Messaging for Over-The-Air Update 

 

Owners who have accepted applicable terms and conditions will have the opportunity to accept software changes to address recall N212338110 using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership.

 

Initial Pop Up Screen Text:

  • Vehicle update is available. Install time: 15 mins
    • Learn More [selectable]
    • Install Update [selectable]

 

Install Screen #1 Text:

  • Important Update for GM Recall No. N21-2338110 Details [selectable]
  • Install time: 15 mins

 

The vehicle will need to remain parked and turned off during the update

  • Remind Me Later [selectable]
  • Install Update [selectable]

 

Update Detail Screen Text:

  • Important Update for GM Recall No. N21-2338110
  • This important update corrects a software problem that may prevent the airbag light from illuminating. If the airbag light does not illuminate, a driver would not be warned of a fault which might indicate a problem with airbag performance in a crash. This update will correct that condition, which is subject to GM Recall No. N21-2338110. You will receive a letter providing additional details regarding this issue.  During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
  • Install time: 15 mins

 

The vehicle will need to remain parked and turned off during the update

  • Remind Me Later [selectable]
  • Install Update [selectable]

 

Decline Update Screen Text:

  • If you decline this update, you will no longer be able to install it. If you would like to install this update later. You will need to contact your dealer for assistance.
    • Cancel [selectable]
    • Decline Update [selectable]

 

Install Screen #2 Text:

  • Update may take up to 15 minutes. Park in a secure location.  Your vehicle will be disabled, cannot be driven, and features like door locks, windows, and chimes may not work.  If you leave the vehicle, do not lock occupants inside.
    • Cancel [selectable]
    • Install Now [selectable]

 

Vehicle State Screen Text:

  • Installing Update Turn the vehicle Off.
  • Vehicle In Park
  • Vehicle Off
  • Programming
  • Update Complete

 


Frequently Asked Questions (FAQs) for Safety Recall N212338110

Airbag Light May Not Indicate Malfunction

These questions and answers are being provided to help GM dealers respond to inquiries from involved vehicle owners about the Safety recall identified above.

 

Q1) Which vehicles are involved?

General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2021 model year Buick Envision vehicles; Cadillac CT4, CT5, Escalade, and Escalade ESV vehicles; Chevrolet Corvette, Suburban, and Tahoe vehicles; and GMC Yukon and Yukon XL vehicles.

 

Q2) What is the issue or condition?

A software problem exists in certain of these vehicles which would cause a sensing diagnostic module (SDM) communications fault to illuminate the airbag malfunction indicator lamp, but only on alternating ignition cycles.  As a result, an SDM communications fault would not consistently illuminate the airbag light on every ignition cycle to indicate a problem to the driver.

 

Q3) What symptoms may be experienced?  What warning signs may be associated with the issue or condition described?

If a consistent SDM communication fault occurs, drivers will only be warned of a fault on alternate ignition cycles.  Loss of communication with the SDM may result in other driver information center (DIC) messages that will be present on every ignition cycle.

 

Q4) What is the remedy/repair?

GM will update the software in the vehicles’ serial data gateway module.  Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership.  Alternatively, owners may schedule to have the updates performed at a GM dealer.

 

Q5) What is the safety risk?  Is the vehicle safe to drive?

A driver might not be warned of an SDM loss of communication fault which might indicate a problem with airbag deployment.  If airbags do not deploy appropriately in a crash, there is an increased risk of injury in that crash.

 

Q6) Does the customer have to pay for this remedy/repair?

No, this inspection/repair will be done at no cost to the customer.

 

Q7) Is the remedy/repair available now?

Yes, please see the attached bulletin for details.

 

Q8) What should customers do until recall repairs can be completed?  Are there any special instructions?

If special instructions are provided, they will be included in the notification letters to customers.

 

Q9) How can customers check to see if their vehicle is involved in this field action?

Customers who own a vehicle involved in the field action will be notified by mail by General Motors, but they may also check their Vehicle Identification Number (VIN) for field actions in GM Owner Center at https://my.gm.com/recalls or via NHTSA’s website at https://vinrcl.safercar.gov/vin/.

 

Q10) If customers are concerned, can they get a rental car or courtesy transportation?

Courtesy transportation is available for customers whose vehicles are involved in this recall and are within the warranty coverage period for the warranty which is associated with this recall.  Please refer to Warranty Administration Bulletin #17-NA-073:  Field Action Courtesy Transportation Policy for further information.

 



10 Affected Products

Vehicles

MAKE MODEL YEAR
BUICK ENVISION 2021
CADILLAC CT4 2021
CADILLAC CT5 2021
CADILLAC ESCALADE 2021
CADILLAC ESCALADE ESV 2021
CHEVROLET CORVETTE 2021
CHEVROLET SUBURBAN 2021
CHEVROLET TAHOE 2021
GMC YUKON 2021
GMC YUKON XL 2021

 


13 Associated Documents

ISSUED Owner Notification Letter(Part 577)

RCONL-21V421-9011.pdf 138.263KB

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Recall Acknowledgement

RCAK-21V421-6020.pdf 778.096KB

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Manufacturer Notices(to Dealers,etc) – Dealer Message re N212338110 – Safety Recall Airbag Light May Not Indicate Malfunction

RCMN-21V421-0452.pdf 61.79KB

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Miscellaneous Document – Screen Message re GM Recall N212338110 Driver Information Center Messaging for Over-The-Air Update

RMISC-21V421-5275.pdf 170.837KB

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Defect Notice 573 Report

RCLRPT-21V421-6219.PDF 218.166KB

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Miscellaneous Document – Frequently Asked Questions (FAQs) for Safety Recall N212338110 Airbag Light May Not Indicate Malfunction

RMISC-21V421-8941.pdf 104.602KB

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Safety Bulletin – N212338110 Airbag Light May Not Indicate Malfunction

RCSB-21V421-0157.pdf 545.766KB

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Manufacturer Notices(to Dealers,etc) – Dealer Message – REVISION N212338110-01 Safety Recall Airbag Light May Not Indicate Malfunction Customer Letter Added and Population Expansion

RCMN-21V421-6941.pdf 69.606KB

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ISSUED Owner Notification Letter(Part 577)

RCONL-21V421-5696.pdf 138.263KB

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Safety Bulletin – Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction

RCSB-21V421-0386.pdf 569.321KB

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Miscellaneous Document – Frequently Asked Questions (FAQs) for Safety Recall N212338110 Airbag Light May Not Indicate Malfunction

RMISC-21V421-7186.pdf 104.602KB

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Recall Quarterly Report #2, 2021-4

RCLQRT-21V421-1747.PDF 211.256KB

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Recall Quarterly Report #1, 2021-3

RCLQRT-21V421-8460.PDF 211.152KB

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Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=21V421&docType=RCL

 


 

Reprogramming

GM Diagnostic/Programming (TIS2Web)

 

Approved J2534 Device with TIS2WEB can reprogram 1996 and later All GM Modules.

To obtain the latest electronic controller calibration information for your vehicle, go to https://tis2web.service.gm.com/tis2web and enter the vehicle's 17 character Vehicle Identification Number (VIN) and select 'Get CAL ID’.

You can then compare the latest part number with the actual number installed on the vehicle to determine if a reprogram is needed.

The Service Programming System (SPS) application is part of the TIS2Web system. To program an ECU, the SPS application must communicate with the vehicle control modules using the proper J2534 programming interface tool.

The following are the supported interface tools:

 
 
 
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light Bosch Automotive Tools MTECH2 Mastertech II J2534 VCI with Wired/Wireless Capability for OEM Reprogramming and Diagnostics on GM, Ford, FCA, Nissan/Infiniti, Honda/Acura, and Toyota/Lexus Vehicles
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light CarDAQ-M Auto Universal Diagnostic Scanner and Programming Tool VSI J2534
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light Drew Technologies (DRWCDPLUSKIT) CarDAQ-Plus J2534 Flash Reprogramming Kit
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light CarDAQ-Plus 3 All Makes J2534 Reprogramming Tool
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light RAP2 OEM J2534 Remote Reprogramming Tool
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light Drew Technologies (DRWMONGGM) Mongoose GM Vehicle Interface (VPW/CAN) J2534
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light Mongoose-Plus J2534 OEM Vehicle Interface Cable - GM OEM Reprogramming and Diagnostics
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light Autel MaxiFlash Elite VCI J2534 Pass-Thru ECU Programming Tool
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light Mongoose-Plus J2534 OEM Vehicle Interface Cable - OEM Reprogramming and Diagnostics for GM
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light BOSCH Automotive Tools MTECH2 Mastertech II J2534 VCI
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light Autel MaxiFlash VCI Vehicle Communication Interface J2534 PassThru ECU Programming Device Bluetooth Connection Internet Update Support CAN FD, 4 CAN Channels, DoIP, D-PDU Works with PC or Autel MS909
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light VXDIAG VCX Nano Compatible for GM/OPEL with GDS2 and Tech2WIN System Diagnostic Tool
Product Safety Recall N212338110 Airbag Light May Not Indicate Malfunction - 2021 Buick Cadillac Chevrolet GMC | small light GODIAG J2534

 

The Tech 2 supports model years 1996 and beyond. With the addition of the CAN Diagnostic Interface (CANdi) module, Tech 2 is fully backward compatible with current Tech 2 functionality and operates transparently when diagnosing non-CAN-equipped vehicles.

Servicing the next generation Global A vehicles will require the diagnostic software, GDS2, Global Diagnostic System 2 running on a local PC device while the MDI is connected to the vehicle. The GM MDI is the Global Diagnostic tool for future vehicles starting with Global A vehicles.

The GM MDI was introduced in the fall of 2007 for Pass-Thru programming and offers faster programming speed. It can be used to perform Pass-Thru programming on all vehicles built since 1996 and into the future. Click here to view a list of GDS supported vehicles.

www.acdelcotds.com

 


 

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  • 🚗[GDS] Global Diagnostic System: ◎New Diagnostic Application Software required for all GM Global Architecture (Global A) Vehicles. ◎GDS & GDS2 is software which runs on a specific PC. Updates received via TIS2Web.
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Last update on 2024-05-17 / Affiliate links / Images from Amazon Product Advertising API

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